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Home >> Lexus >> 2001 >> IS 300 >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Specifications >> Cooling System Bleeding >> LS430
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Cooling System Bleeding: LS430

  1. Remove "V" bank cover. Remove radiator cap from radiator reservoir. Remove water fill plug from throttle body. Remove 3 drain plugs on engine and radiator, then drain coolant. Close drain plugs, and tighten to 9 ft. lbs. (12 N.m).
    2. NOTE: Ensure coolant mixture contains plain water. Use of coolant which includes more than 50 percent ethylene-glycol is recommended, but not more than 70 percent.
  2. Slowly add coolant mixture to throttle body until system is full. Install fill plug, and tighten to 33 ft. lbs. (45 N.m). Slowly add more coolant mixture into radiator reservoir until system is full. Install radiator cap.
  3. Start engine and allow to idle. Increase engine speed to 2000-2500 RPM. Recheck coolant level at coolant reservoir tank, and add as necessary. Check system for leaks.
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